east dwight eisenhower and richard nixon. the two men were at the center of the american political stage for over to the p.o. decades. it's even though nixon was eisenhower's vice-president, said they had a tense and often distrustful relationship. he writes about it in his new book. i spoke with him a little bit earlier. you remember eisenhower as a war hero and richard nixon as the disgraced president brought low by watergate. worthy meant more similar than we think? >> there personalities could not have been more different. nixon would always be nixon, always insecure. eisenhower but always be eisenhower. i asked somebody what he was like and they said that he would go all five star on you. >> eisenhower was very suspicious of political -- corera politicians. why did he choose him? >> he did not choose them. when eisenhower was nominated for president in 1952, he was not even aware that he made a choice. i am the one who does it? as opposed to the delegates. yes, it is you. >> why was the relationship so difficult for nixo